<!doctype html>
<html>
  Esto es menu.html
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <title>Connect JavaScript - Console</title>
  </head>
  <body>
    <form action="/addGroup" method="post">

        <input id="fb_uid" type="text" hidden="true" name="fb_uid"> 
        <input type="submit" value="Join group">
    </form>
  </body>
</html>
